Henry rauser



NrTED STATES PATENT Fries.

HENRY RAUSER, CHARLES WIEBER, AND ALEXIS SOKOLOFF, OF MOSCOW,

RUSSIA.

PRESSURE-GAG E.

SPECIFICATION forming part of Letters Patent No. 507,387, dated October24, I893.

Application filed June 3, 1893. Serial No. 476,492- (No model.)

To all whom it may concern:

Be it known that we, HENRY RAUSER, CHARLES WIEBER, and ALExIs SOKOLOFF,all subjects of the Emperor of Russia, and residents of Moscow, in theEmpire of Russia, have invented a new and Improved Pressure- Gage,ofwhich the following is a full, clear,

trolled valve of a peculiar construction which is adapted to regulatethe admission of steam to one of the communicating tubes, whereby apressure is exerted at intervals upon the surface of the liquid, and thelatteris caused to rise in the other communicating tube to indicate thepressure of steam or other medium on an appropriate graduated scale.

The invention will be fully disclosed hereinafter, and the features ofnovelty pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in both the figures.

Figure 1 is a central sectional elevation of our improved pressure gage;and Fig. 2 is a side elevation of the same.

The pressure gage consists primarily of a spherical casing A made in twohalves so as to be readily taken to pieces. In its upper part the casingis provided with a channel B into the outer orifice of which is screweda nozzle 0 the bore of which is of less diameter than the channel B. Inthe lower part of the casing there is provided a channel D which isessentially level with the bottom of the spherical cavity of the casing.The outer orifice of channel D is normally closed by.

means of a screw-plug E. Another screwplug F, closes a vertical openingextending at right angles to channel D.

G is an essentially vertical tube preferably made of glass or of othertransparent material, and is passed through an opening in the extensionH of the casing A. The lower end of tube Gr reaches into the plug F andrests on a rib I provided in the same. A packing ring or washer J isemployed to tighten the joint between the tube G and plug F. The upperend of tube Gris preferably bent downward over a cup K formed at the topof casing A.

L is a screw-plug adapted to close an opening located at the highestpoint of casing A.

M is a tube centrally inserted into casing A from below, and extendinginto the upper part of the same. Within the spherical chamber of thecasing there is a ball float N the specific gravity of which is lessthan that of the liquid with which the lower part of the casing and oftube G are to be filled. The float N is provided with a verticalcentralbore 0 adapted to receive the tube M, and with transverse openings P. Atthe top of the float an adjustable conical valve Q is screwed in, saidvalve being adapted to have its seat in the upper end of tube M. ThecollarR of the valve is preferably guided in a cylindrical recess of thecasing A, as shown.

S is a scale graduated to indicate the pressures corresponding todifferent levels of the liquid in tube G.

The operation of the device is as follows: Screw-plug L is removed tofill the spherical cavity of the casing A and tube G with mercury or anyother approved liquid, up to the zero mark of the scale S. The float Nis so constructed as to slightly lift the valve Q off the upper end oftube M when the liquid is level with the zero mark, as shown. Tube M isconnected with the boiler. It will be understood that when the parts arein their initial position, steam may pass up through tube M, theopenings P to the spherical chamber of easing A and into the bore 0, andto the surface of the liquid contained in the spherical chamber and saidbore. As the steam cannot escape through the contracted nozzle 0 as fastas it enters casing A, a certain pressure will be exerted upon thesurface of the mercury in the casing, which will cause the said mercuryto rise in tube G and to fall :00

in the casing A. The pressure in the casing will however be slight incomparison with the boiler pressure, since the small quantity of steamwhich issues from tube M past the valve Q instantly expands within thecasing, whereby the steam pressure is considerably reduced. As the levelof the mercury falls in the casing A, the float N also sinks and bringsthe conical valve Q on to its seat to close the upper end of tube M andthus to cut off the admission of steam. It will be obvious that a partof the weight of float N will keep valve Q pressed on its seat when themercury recedes from casing A. When the steam that has remained in thecasing condenses, or when the boiler pressure increases so as to becapable of lifting the valve Q off its seat, the spherical cavity of thecars ing A will again be in communication with the steam tube M. It willbe understood that the condensation of steam in casing A will allow themercury to gradually flow back into the same till the valve Q can belifted by the boiler pressure. This operation will be re peatedperiodically and automatically.

It will be obvious that a definite level of the mercury in tube G willcorrespond to the amount of boiler pressure. The scale S can thereforebe graduated to exactly indicate such boiler pressure.

The main advantage of the invention is that the parts of the pressuregage are subjected to a very slight pressure, and in consequence thereofa comparatively short tube G will be suflicient tohold the indicatingcolumn of liquid when the same rises to the level corresponding to thehighest boiler pressure. When the upper end of tube G is bent down overcup K, as shown in Fig. 1, any liquid that may rise to the bend will becollected in the said cup, whence it can be returned into the casing Aby removing the screwplug L.

It will be obvious that while the drawings represent a pressure gagewhich embodies the above described improvements in a very practicalform,yet many details may be altered without departing from the natureof the invention. We do not, therefore, confine ourselves to thespherical shape of the casing Aand float N, as the shape of these partsis immaterial so long as the float is capable of rising and falling inthe casing. The channel B may be dispensed with, if desired,and thenozzle 0 put in the place of the screwplug L. The valve Q instead ofbeing conical, may be cylindrical or of any other suitable shape, thoughit is believed that a conical valve will insure the most sensitiveoperation. The apparatus may also be employed for measuring the pressureof vapors.

Having thus fully described our invention,

we claim as new and desire to secure by Letters Patent- 1. In a pressuregage, the combination, with a casing having a nozzle or outlet leadingtherefrom, and a tube communicating with the said casing at one end,said casing and tube being adapted to be partly filled with a suitableliquid, of a float held in the casing, a tube leading into the saidcasing from the outside thereof, and a valve secured to the float andadapted to temporarily close the inner end of said tube to cut oft theadmission of the medium entering the tube under pressure, substantiallyas described.

2. In a pressure gage, the combination, with a casing having a nozzle oroutlet leading fromthe upper part thereof to the surrounding air, and anupright tube communicating at one end with the lower part of the saidcasing and at the other end with the surrounding air, said casing andtube being adapted to be partly filled with a suitable liquid, of avertical steam tube leading into the said casing from the outsidethereof, a float held in the casing and having a guided movement alongthe said steam tube, and provided with openings through which the steamtube may communicate with the inside of the casing, and an adjustablevalve secured to the upper part of the float and adapted to temporarilyclose the upper end of said steam tube to cut on? the admission ofsteam, substantially as described.

3. In a pressure gage, the combination, with a casin g having aspherical chamber and a contracted nozzle or outlet leading from theupper part thereof to the surrounding air, said casing having a cupformed at its top, an upright tube communicating at one end with thelower part of the said casing and having its other end open and locatedabove the cup at the top of the casing, said casing and tube beingadapted to be partly filled with a suitable liquid, and a graduatedscale arranged parallel with the said tube, of a central vertical steamtube leading into the said casing from below, a spherical float held inthe casing and having a guided movement along the said steam tube, andprovided with openings through which the steam tube may communicate withthe chamber Within the casing, and an adjustable valve secured to theupper part of the float and adapted to temporarily close the upper endof said steam tube to cut offthe admission of steam, substantially asdescribed.

HENRY RAUSER. CHARLES WIEBER. ALEXIS SOKOLOFF. Witnesses:

MAX RAUSER, EMIL LINDEMANN.

IIO

